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4. Troubleshooting
6) CPU Fan control
1) Checking the work of Fan
- Without disassemble the system,you can find out normal working just checking the
FAN ON/OFF.
picture(1) Fan off
- When you proceed the SAFC program firstly, the state is Fan off or minimal working
state.
- At "ON/OFF Control" ,press "ON" Button then Fan is ON then max working state.
- At Fan ON state, press "OFF" Button then Fan is off or minimal working state.
2) Checking the normal woking state of Fan control
No
1
> The way to check the Fan working voltage
- Within Fan Connector is inserted
pin with Multi-meter.
> The standard of Fan Working voltage pass
: if Fan working voltage is within spec +/-10%, then pass
Item
Mode
Off
Low
Middle1
FAN Working
voltage
Middle2
Middle3
High
1
2
picture(2) Fan on
Voltage(V) Design guideline
SPEC : ± 10%
DC 0V
DC 2.2V
DC 2.6V
DC 3.0V
DC 3.5V
DC 3.9V
1단계
2단계
picture(3) Adjust Fan state
check the B/D's Connector 1번(Red) and 2번(Black)
4- 20
3단계
4단계
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